Multiply.3(7x + 9y + 7)
A. 21x + 9y + 7
B. 21x + 9y + 21
C. 21x + 27y + 7
D. 21x + 27y + 21
Answer: D
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Find the extreme values of the function subject to the given constraint.
A. Maximum: 64 at 
minimum: -64 at 
B. Maximum: 128 at 
minimum: -128 at 
C. Maximum: 64 at 
minimum: -128 at 
D. Maximum: 128 at 
minimum: -64 at 
Write the fraction as an equivalent fraction with the given denominator.
= 
A. 
B. 
C. 
D. 
Use the properties of logarithms to rewrite the logarithm if possible. Assume that all variables represent positive real numbers.log2 
A. 7 log2 x + 4 log2 y + log2 9 B. 7 log2 x + 4 log2 y - log2 9 C. 7 log2 x - 4 log2 y - log2 9 D. (7 log2 x)(4 log2 y) - log2 9
For the graph of the function y = f(x), find the absolute maximum and the absolute minimum, if it exists.
A. Absolute maximum: f(2) = 7; Absolute minimum: f(3) = 0 B. Absolute maximum: f(6) = 5; Absolute minimum: f(1) = 2 C. Absolute maximum: f(7) = 2; Absolute minimum: f(0) = 3 D. Absolute maximum: f(5) = 6; Absolute minimum: f(2) = 1